Depending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.
To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.
Recommend to read
CAR-TRIPTYCH
Any agricultural equipment used by gardeners and gardeners, operated mainly in the warm season, and the rest is just stored, waiting in the wings. Therefore, clear requirements: to be...
STUDENT “ADRENALINE”
Before you start talking about the car "Adrenaline" - built student engineering group of Moscow automobile and road Institute (MADI) to participate in the international competition...
